Question 7.3: An amplifier with negative feedback applied has an open-loop...

An amplifier with negative feedback applied has an open-loop voltage gain of 50, and one-tenth of its output is fed back to the input (i.e. β = 0.1). Determine the overall voltage gain with negative feedback applied.

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With negative feedback applied the overall voltage gain will be given by:

G=\frac{A_v}{1+\beta A_v}=\frac{50}{1+(0.1\times 50)} =\frac{50}{6} =8.33

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